Mineralogy and geochemistry of mill tailings impoundments from Algares (Aljustrel), Portugal: Implications for acid sulfate mine waters formation

• Type: Article in International Scientific Journal
• Date: 2006

Authors

Bobos, I (Author) FCUP; Duraes, N (Author) Other; Noronha, F (Author) FCUP

Journal

Title: Journal of Geochemical Exploration

Vol. 88

Pages: 1-5

ISSN: 0375-6742

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 23 Citations

Scopus - 28 Citations

Scientific classification

FOS: Natural sciences > Earth and related Environmental sciences

Other information

Authenticus ID: P-004-Q45

DOI: 10.1016/j.gexplo.2005.08.004

Abstract (EN): Fine fractions from mill tailing deposits and filtrated material from acid mine waters were mineralogical and geochemical studied. Siderotil, copiapite, rhomboclase, natrojarosite, gypsum, amorphous ferric oxyhydroxide were identified by X-ray diffraction (XRD). Schwertmannite was identified by Infra-red spectroscopy (ATR-IR). Stretching modes of S-O bonds were analyzed either for finest fractions or filtrated material. The presence of SO4 complexes identified either in bidentate or monodentate coordination affects the mobilization of bivalent metals (Me). Weak Me-SO4 bond was found for filtrated phases from acid waters.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5